diff options
| author | Joonwoo Park <joonwoop@codeaurora.org> | 2016-10-21 13:39:31 -0700 |
|---|---|---|
| committer | Joel Fernandes <joelaf@google.com> | 2017-10-19 11:56:50 -0700 |
| commit | 7ab48e4c8d9e0652bd978f3df26c29e64b5ea85a (patch) | |
| tree | 33111b9aaed0e22eec74f282a08c3c16a413bd6c /lib/mpi/mpi-internal.h | |
| parent | be832f69a95eb97b4ed0bc8c2b716ee7837ea617 (diff) | |
sched/fair: prevent meaningless active migration
At present need_active_balance() determines whether an active
upmigration is needed by using capacity_of(). A CPU's capacity
may be reduced by RT pressure, and therefore distinguishing
capability differences with capacity_of() may lead to suboptimal
active migrations to less capable CPUs. Use capacity_orig_of
to distinguish differently capable CPUs in addition to
capacity_of(), thus avoiding placing tasks on less capable CPUs
due to instantaneous RT pressure.
Change-Id: I3e1435246a8edc3ad618ef98a34866cfbd8c16a5
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
[markivx: Reworked the commit text a bit]
Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org>
Diffstat (limited to 'lib/mpi/mpi-internal.h')
0 files changed, 0 insertions, 0 deletions